Switch-stand.



NvN/" 2 SHEETSmSHEET 1.

Patented June 9,1914.

fl/l//u/I. -lll SWITCH STAND.

APPLICATION FILED NOV.14,

D. C. MULVIHILL.

D. C. MULVIHILL.

SWITCH STAND.

APPLICATION FILED No1/.14, 1913.

1,099,566.. Patented June 9,1914.

2 SHEETS-SHEET Z.

E i ligmllml COLUMBIA PLANoanApM cO..WASliINO'mN D c GFFICE.

DANIEL C. MULVIHILL, 0F I-IANNIBAL, MISSOURI.

SWITCH-STAND.

To all whom t may concern Be it known that I, DANIEL` C. MULVIHILL, a citizen oit the United States, and a resident of Hannibal, county oi" Marion, and lState et Missouri, have invented certain new and useful Improvements in Switch-Stands, of which the following is declared to be a full, clear, and exact description.

This invention relates to switch stands and designs particularly to provide a switch stand of simple, substantial and improved construction, capable of being easily operated.

ln its present form the invention has reference, more particularly, to that type of switch stands known as ground throw stands, movement of the operating lever through an arc ot approximately 180 degrees, serving to move the switch rod and switch points through the required distance to throw the switch.

rlhe invention consists primarily in a switch stand having a lever-operated, screwthreaded member, threaded in the casing or trame ot the stand, and operatively connected to the switch rod in such manner that movementoif the screw-threaded member through one halt' ot' a revolution, acts to move the switch-rod through the required distance to throw the switch.

The invention 'further consists in the several novel features hereinafter fully set forth and claimed.

Vllhe invention is clearly illustrated in the drawings furnished herewith, in which Figure 1, is a side elevation of a switch stand embodying the preferred form of the invention, the operating lever being shown in section; Fig. 2, is a horizontal section taken on line 2 2, Fig. 1; Fig. 3, is an end elevation of the stand looking in the direc tion of the arrow 3, in Fig. 1, the switch rod being shown in cross section; Fig. Ll, is a detail view, partly in end elevation `and partly in cross section, of the operating lever, the screw-threaded member and a eeru tain stem, the line of section being indicated at 1 -t, in Fie'. 1; Fig. 5, is a plan of a fragment of said stem and certain jaws on one end thereof; Fig. i6, is an end view of said screw-threaded member, and Fig. 7, is a vertical, longitudinal section through a modified form of switch stand embodying the invention. l

Referring to said drawings, 10, designates the casing, supporting member or frame of Specification of Letters Patent.

Application filed November 111, 1913.

Patented June 9, 1914.

Serial No. 800,911.

the stand, and said casing is arranged to rest upon two or more ties; it is formed with a base portion 11, 11, extending horizontally :trom its central part 12, and said base portion is iormed with bolt holes, through which extend bolts for bolting the stand to the ties. Said central part 12, is formed with an opening 13, (shown as eX- tending the full length oit said central part 12) and extending through said opening 13, is an externally screw-threaded member 111, here shown in the form oft a sleeve or tubular member having the thread 15h, upon its external wall which is in threaded engagement with a thread 15, formed on the intei-nal wall o1 the casing. In its preferred torni, the pitch of said threads is such that one halt a turn, oit the sleeve member la, or approximately one halt a turn, result-s in a longitudinal movement o1 the sleeve through a distance equal to one halt the length ot throw of the switch rod in throw` ing a switch. Connected to one end of said sleeve is an operating or switch lever 15, for rocking the sleeve and throwing the switch, and said lever is here shown as formed with a key seat or notch 16, which receives a key or feather 17, on the sleeve (see Fig. 11,) to form a positive connection between the two. One part o1 the lever 15, may bear against the end of the thread on the sleeve and is held in place by a washer and key, as shown.

Thek screwthrcaded sleeve 141-, is operatively connected with the switch rod 18, through the instrumentality of means for increasing the throw and one form of means will now be described. Mounted in the hollow of the sleeve 111, is a stem or rod 19, upon which the sleeve is tree to rotate, but which is connected with the sleeve so as to move longitudinally therewith. As here shown, one end ot said stem is provided with a forked jaw 20, which presents a shoulder 21, against. which abuts the adjacent end of the sleeve 14T; and upon the other end of said sleeve maybe secured a washer or collar 22, bearing against the adjacent end of the sleeve 1&1, and side oit the lever 15. A tapered key 23, extends through a key way in the stem 19, and holds the washer in place against the outer face ott the lever and sleeve. 'llhe sleeve 14, and stem 19, are thus cou pled together against relative longitudinal movement by the jaw 20, washer 22, and key 23.

The jaw 20, of the stem 19, is pivotally connected to a throw-increasing lever 24, midway between its ends, as for instance by a bolt 25, passing through the jaw and lever, and the one end of said lever is connected to a lug 26, of the casing by links 27, pivotally connected to the lever 24, and lug, 26, by bolts 28, 29. The other end of the lever 24, is pivotally connected to the switch rod 1S, by a bolt 29. Cotter pins 30, may be thrust through holes in the ends of the bolts to hold them in place. By reason of the lever connection between the sleeve and switch rod, the longitudinal movement of the sleeve and stem is multiplied (here shown as doubled), so that the pitch of the threads of the sleeve may be comparatively slight and the longitudinal distance traversed by the sleeve in one half a revolution, may thus be increased to the desired or required movement of the switch rod.

ln accordance with the practice, a signal 3l, is employed on the upper end of a signal carrying spindle 32, rotatively mounted on lugs 33, 34, extending out from one side of the casing, and said spindle is rocked back and forth to properly display the signal when the switch is thrown. The signal operating' means is here shown as comprising a link 35, connected to a forked jaw 36, formed on the jaw 20, and connected to a crank 37, on the spindle 32. A bolt 3S, extending through the jaw 36, and one end of tne link 3o, pivotally connects them, and a pin 39, extending through the other end of the link 35, and crank 37, connects those parts. lThe crank is shown as formed with a square hole for the reception of a squared portion 40, of the spindle. The proportion and arrangement of the parts are such that movement of the link through its strokes turns the signal one quarter way around.

In operation the switch is thrown by moving the operating lever 15, over from one side to the other. This movement of the operating lever turns the sleeve half way around, and, because of its screw-threaded connection with the casing, causes an endwise or longitudinal movement dependent upon the pitch of the thread which, in the preferred form, is one half the distance required for the movement of the switch rod. The longitudinal movement of the sleeve is imparted to the stem through the shoulder and Washer and the stem swings the throw increasing lever through its stroke. llhe stem being connected to the lever between its ends and the switch rod to one of its ends, the throw of the switch rod is increased, here shown as doubled.

In the modified form shown in F ig. 7, the throw increasing lever is omitted and the pitch of the thread 15X, on the sleeve 14X, is increased so that one half a turn of the sleeve moves the stem and switch rod through the required distance to throw a switch.

Various alterations and modifications are possible without departing from the spirit of this invention and l intend therefore not to limit myself to the exact forms of con struction shown and described, but intend, in the following` claims, to claim the entire invention disclosed herein.

I claim as new and desire to secure by Letters Patent l. ln a switch stand of the character described, the combination of a casing having a bore therethrough and internally screwthreaded, a screw-threaded member threaded in the bore of the casing, a switch rod, operative connections between said switch rod and screw-threaded member including throw increasing means, and means for turning said screw-threaded member.

2. In a switch stand, the combination of a casing, an externally screw-threaded sleeve threaded in an opening in said casing, a stem connected to said sleeve to move longitudinally therewith, a lever fulcrumed at one end and connected at its other end to a switch rod, and between its ends connected to said stem, and means for rocking said sleeve.

3. In a switch stand, the combination of a stationary, internally screw-threaded, supporting member, an externally threaded sleeve threaded therein, a switch lever secured to said sleeve and movable through an arc of approximately 180 degrees, a throwincreasing lever fulcrumed at one end and connected to a switch rod at its other end, a stem connected to said throw-increasing lever between its ends and connected to said sleeve to move therewith in a direction longitudinal of the sleeve.

4L. In a switch stand, the combination of a casing having an internally screw-threaded bore therethrough, an externally screwthreaded sleeve in said bore and threaded in the casing, a switch lever for rocking said sleeve, a stem extending through said sleeve and having a shoulder at one end engaging one end of the sleeve, and a member secured on its other end, engaging that end of the sleeve, a throw-increasing lever pivotally connected between its ends to said stem, and fulcrumed at one end, its other end being connected to a switch rod.

5. A switch stand comprising in combination a supporting member having an internally screw-threaded transversely extending portion, an externally screw-threaded sleeve threaded therein, a switch lever attached to one end of said sleeve, a switch rod, and operative connections between said sleeve and switch rod for multiplying the longitudinal movement of said sleeve.

6. A switch stand comprising in combination a supporting member having an internally screwthreaded transversely extending portion, an externally screw-threaded sleeve threaded therein, a switch lever attached to one end of said sleeve, a switch rod, and operative connections between said sleeve and switch rod :tor multiplying the longitudinal movement of said sleeve, comprising a lever iulcrumed at one end and connected at its other end to said switch rod, and a stem extending vthrough said sleeve and Inovable longitudinally therewith, one end oit said stein having a jaw connected to said lever between its ends.

7. A switch stand comprising in combination a supporting member having an internally screw-threaded transversely extending portion, an externally screw-threaded sleeve threaded therein, a switch lever attached to one end ot said sleeve, a switch. rod, and operative connections between said sleeve and switch rod for multiplying the longitudinal movement of said sleeve, comprising a lever ulcruined at one end to links which are pivoted to said supporting member, said lever being connected at its other end to said switch rod, a stem extending through said sleeve and movable longitudinally therewith, said stein having a jaw on one end pivoted to said lever between its ends.

S. A switch stand, comprising an internally screw-threaded, supporting member, a rotator-y, reciprocatory, externally screwthreaded sleeve threaded therein, a switch lever attached to said sleeve, a stem extending through said sleeve and having a aw 0n one end abutting against one end of said sleeve, a washer on said stem abutting against the other end of said sleeve, a key in the stein 'for holding said washer in place, and a lever connected between its ends to said jaw, and at one end to a switch rod.

In witness whereof, I have executed the above at Hannibal, Marion county, Missouri, this 7th day oi' November, A. D. 1913,

DANIEL C. MULVIHILL.

lVi tnesses:

JOHN MULVIHILL, CARL E. SCHEIDKER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

